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Posted by Ewoud Dronkert on 05/23/05 17:46
On 23 May 2005 06:38:08 -0700, Hans A wrote:
> pick two random numbers between 1 and the total number of lines
> in the textfile, and then try to read out these line numbers
$fname = 'textfile.txt';
$lines = 1000; //number of lines in the text file
$words = 2; //number of words (lines) to pick
$skip = array();
for ( $i = 0; $i < $words; ++$i )
{
$r = mt_rand( 0, $lines - $words );
$lines -= $r;
$skip[] = $r;
}
$word = array();
$fh = fopen( $fname );
for ( $i = 0; $i < $words; ++$i )
{
for ( $j = 0; $j <= $skip[$i]; ++$j )
$w = fgets( $fh );
$word[] = trim( $w );
}
echo 'Random words: '.implode( ', ', $word );
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